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About This Item

 

Full Description

This standard specifies requirements for the qualification, production, and documentation of corrosion-resistant bolting used in the petroleum and natural gas industries.

This standard applies when referenced by an applicable API equipment standard or otherwise specified as a requirement for compliance.

This standard establishes requirements for two bolting specification levels (BSL). These two BSL designations define different levels of technical, quality, and qualification requirements: BSL-2 and BSL-3. The BSLs are numbered in increasing levels of requirements in order to reflect increasing technical, quality, and qualification criteria. BSL-2 and BSL-3 are intended to be comparable to BSL-2 and BSL-3 as found in API 20E. BSL-1 is omitted from this standard.

This standard covers the following product forms, processes, and sizes:

a) machined studs;

b) machined bolts, screws, and nuts;

c) cold-formed bolts, screws, and nuts with cut or cold-formed threads;

d) hot-formed bolts and screws <1.5 in. (38.1 mm) nominal diameter;

e) hot-formed bolts and screws ≥1.5 in. (38.1 mm) nominal diameter;

f) roll threaded studs, bolts, and screws <1.5 in. (38.1 mm) diameter;

g) roll threaded studs, bolts, and screws ≥1.5 in. (38.1 mm) diameter;

h) hot-formed nuts <1.5 in. (38.1 mm) nominal diameter;

i) hot-formed nuts ≥1.5 in. (38.1 mm) nominal diameter.
 

Document History

  1. API Spec 20F

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    Corrosion Resistant Bolting for Use in the Petroleum and Natural Gas Industries, Second Edition

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  2. API Spec 20F


    Corrosion Resistant Bolting for Use in the Petroleum and Natural Gas Industries, First Edition

    • Historical Version